129121905 (number)

129121905 is an odd 9-digits composite number following 129121904 and preceding 129121906. In scientific notation, it is written as 1.29121905 × 10^8. The sum of its digits is 30. It has a total of 4 prime factors and 16 positive divisors. There are 61145280 positive integers (up to 129121905) that are relatively prime to 129121905.

Interesting facts

Basic properties

Name

Name one hundred twenty-nine million one hundred twenty-one thousand nine hundred five

Notation

Scientific notation 1.29121905 × 10^8
Engineering notation 1.29121905 × 10^6

Prime Factorization of 129121905

Prime Factorization 3 × 5 × 473 × 18199

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 129121905
Product of the distinct prime numbers

The prime factorization of 129121905 is 3 × 5 × 473 × 18199. Since it has a total of 4 prime factors.

Most popular turbo-numbers

Basic calculations (n = 129121905)

Multiplication

n×y
n×2 258243810
n×3 387365715
n×4 516487620
n×5 645609525

Division

n÷y
n÷2 64560952.5
n÷3 43040635
n÷3 32280476.25
n÷5 25824381

Exponentiation

ny
n2 16672466350829025
n3 2.1527806162674E+24
n4 2.7797113421953E+32
n5 3.5892162385436E+40

Nth Root

y√n
2√n 11363.181992734
3√n 505.43654700294
4√n 106.59822696806
5√n 41.898645658474

Divisors of 129121905

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -129121904
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 1
Returns the nth root of the product of n divisors
H Harmonic Mean 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 129121905 can be divided by 16 positive divisors. The sum of these divisors (counting 129121905) is 1, the average is 0.0625.

Base conversion 129121905

Base System Value
2 Binary 111101100100011111001110001
3 Ternary 22222222001221210
4 Quaternary 13230203321301
5 Quinary 231023400110
6 Senary 20451310333
8 Octal 754437161
10 Decimal 129121905
12 Duodecimal 372ab3a9
16 Hexadecimal 7b23e71
20 Vigesimal 20704f5
36 Base36 24vj3l

Cryptographic Hash Functions

md5 0d098357b6b3a65989fd168b043ba76e
sha1 c597c1c6ff1ebd8a6d20a5058bd86dcb3b7c9594
sha256 2f8178629976d780742caafdc7674df23d456177afa5edc7ee346ff8a2f91c53
sha512 749a4d84db9744b57dba0f924ba41bc50f3c416b00348d355451c8949256c9dbba29834ea5b589556fb08d6433b6b47224573e7db45675ee0c9aad588cb32752
ripemd-160 01d9e067b7289c1d2462d7e705ca73fd29f2e451

129121905 as geometric shapes

Circle

Radius = n
Diameter 258243810
Circumference 811296856.33104
Area 5.2378097804987E+16

Sphere

Radius = n
Volume 9.0175463584751E+24
Surface area 2.0951239121995E+17
Circumference 811296856.33104

Square

Length = n
Perimeter 516487620
Area 16672466350829025
Diagonal 182605949.25045

Cube

Length = n
Surface area 100034798104974150
Volume 2.1527806162674E+24
Space diagonal 223645699.83008

Equilateral Triangle

Length = n
Perimeter 387365715
Area 7.2193897017796E+15
Altitude 111822849.91504

Triangular Pyramid

Length = n
Surface area 7.2193897017796E+15
Volume 2.5370762869494E+23
Height 60868649.75015